Anything by Malcolm Gladwell: Blink, Tipping Point, Outliers. His old NY'er pages are worth looking at too.
For not-quite-mind-candy: Try Geraldine Brooks: March, Year of Wonders, The People of The Book. Historical fiction that is good fodder for thought.
Just my $.07 (adjusted for inflation, cost of bailout and cost of living in NY)
Ficos 2/17/08: TU 551 EQ 534 EX 587
Ficos 2/12/09 TU 695 EQ 715 EX 715
Fico...4/15/10....drumroll.....EQ 743